Is it possible to have the recent posts show posts that are older, maybe as old as a week instead of 24 hours?

Some threads end up under the rug if they don't get answered within 24 hours. The threads are obviously still in the respective category when browsing through the forum, but if they were still on the recent posts for a few more days they would probably get replies sooner. This is especially noticeable to me on the weekends when threads unanswered from Friday are still unanswered on Monday but no longer on the recent posts list.